CHEERS! - An Amazing Math Trick

[CosmosBlack]

I think it only works with 7-digit phone numbers

1. Grab a calculator (you won't be able to do this one in your head)
2. Key in the first three digits of your phone number (NOT the area code)
3. Multiply by 80
4. Add 1
5. Multiply by 250
6. Add the last 4 digits of your phone number
7. Add the last 4 digits of your phone number again
8. Subtract 250
9. Divide number by 2

 

[epj3]

Came out as 6260015... definitely not my number

Nevermind, it worked

 

[indy_85stariones]

Magic with Algebra...
---------------------
1. Grab a calculator (you won't be able to do this one in your head)
2. Key in the first three digits of your phone number (NOT the area code)
3. Multiply by 80
4. Add 1
5. Multiply by 250
6. Add the last 4 digits of your phone number
7. Add the last 4 digits of your phone number again
8. Subtract 250
9. Divide number by 2
----------------------
Remove steps #4 and step #8
1. Grab a calculator (you won't be able to do this one in your head)
2. Key in the first three digits of your phone number (NOT the area code)
3. Multiply by 80
5. Multiply by 250
6. Add the last 4 digits of your phone number
7. Add the last 4 digits of your phone number again
9. Divide number by 2
-----------------------
Combine steps #3 and #5
1. Grab a calculator (you won't be able to do this one in your head)
2. Key in the first three digits of your phone number (NOT the area code)
3. Multiply by 20000
6. Add the last 4 digits of your phone number
7. Add the last 4 digits of your phone number again
9. Divide number by 2
------------------------
Cut all steps in half
1. Grab a calculator (you won't be able to do this one in your head)
2. Key in the first three digits of your phone number (NOT the area code)
3. Multiply by 10000
6. Add the last 4 digits of your phone number
------------------------
I took all of the fun out of it...

 

[xLibelle]

Thank you Indy, I hate it when people look at these math jokes and are like, wow.